1青贮玉米的概念和品质标准青贮玉米是指在玉米乳熟后期至腊熟期,收获包括果穗在内的地上部植株,作为青贮饲料原料的玉米。青贮玉米的品质,目前国际上通常采用洗涤剂对纤维的营养价值进行评价,具体标准是:干物质含量30%～40%,干物质产量2500kg/hm2,粗蛋白含量>7.0%,淀粉含量>28%,中性洗涤剂纤维含量<45%,酸性洗涤剂纤维含量<22%,木质素含量<3.0%,离体消化力>78%,细胞壁消化力>49%。饲养牲畜适口性好,消化率高, 1 The concept and quality standard of silage corn Silage corn refers to the corn which is the raw material of silage, which is obtained from the shoots including the ear during the period from the late ripening of corn to the ripening of corn. At present, the nutrition value of silage corn is generally evaluated by the detergent in the world. The specific standards are: dry matter content of 30% -40%, dry matter yield of 2500kg / hm2, crude protein content> 7.0%, starch content> 28%, neutral detergent fiber content <45%, acidic detergent fiber content <22%, lignin content <3.0%, in vitro digestibility> 78%, cell wall digestibility> 49%. Cattle livestock palatability, high digestibility,